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AWS STS unifies session token size limit to 4096 bytes, adds CloudWatch metrics

2026-09-17 15:22 UTC · AWS What's New · read the source ↗ #aws-sts#iam#observability
  • Platform/SRE — Learn: The consolidated 4,096-byte limit and new CloudWatch/CloudTrail session token size metrics are worth noting for teams that use large inline policies or session tags in STS calls; no action required, no deadline, but the new metrics can surface token-bloat issues proactively.
  • CI/CD — Skip
  • Leader — Skip
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